2. Drop the garlic cloves, olives, fresh mushrooms and onion into the processor bowl and mince. Add these to the bread crumb mixture and combine.

Add the ground beef and egg to the mixing bowl, using your hands, kneed the mixture until it is thoroughly combined. Wrap the meat mixture up in plastic wrap and let cool in the refrigerator for at least 2 hours to let the flavors marry.

Preheat oven to 350 and spread a large baking sheet with parchment. Using a tablespoon, scoop out equally sized balls of meat. Use your hands to turn them into little balls. Place the balls on the baking sheet. Bake for 35 minutes.